In addition to [or may be instead of] this long article, one might look at the real examples of people, who achieved exceptional results whilst working less than 8 hours per day.
One such example is Roberto Goizueta, whose work habits at the helm of Coke were vividly described in this book - Greising, David (1989). I'd Like the World to Buy a Coke: The Life and Leadership of Roberto Goizueta.
One such example is Roberto Goizueta, whose work habits at the helm of Coke were vividly described in this book - Greising, David (1989). I'd Like the World to Buy a Coke: The Life and Leadership of Roberto Goizueta.